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@uitrit tets a'trnt @frn JAMES N. FREESTONE, OF WILLIAMSBURG, NEW. YORK.

Letters Patent No. 68,431, dated September 3, 1867.

IMPROVBD WRENCH.

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TO ALL WHOM IT MAY GONCERN:

Beit known that I, JAMES N. FREESTONE, of Williamsburg, Kings county,and State of New York, have invented a new and improved Pipe-Wrench; andI do hereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon.

The nature of my invention consists in providing the sliding-piece(which in ordinary wrenches forms the lower jaw) with fulcrunhpins, towhich I connect an independent movable angular-shaped claw; this clawforms the upper jaw of the wrench. The lower or Acorresponding jaw Iform at the upper end of the wrench' handle; the object ofthe wholecombination being to secure airmer grasp in holding either a pipe orabolt, Ste.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

Figure 1 represents a side view of the wrench. f

Figure 2 is a front view of tho same.

Figure S-is also a side View and section of sliding-piece.

The sliding-piece S which usually forms the lower jaw of an adjustablewrench is provided with two fulcrum-pins,pp, situate one on each side ofsaid sliding-piece S. Connected to the fulerum-pins p p is a movableangular-shaped claw, C; this claw forms the upper jaw of the wrench. Thelower jaw e is formed bythe peculiar tooth-shaped upper end of thewrench-handle H. This handle is made to pass through the mortise withinthe sliding-piece S. This handle has a toothed rack, 1', which gearsinto one or more teeth, o, contained within the mortise ofthesliding-piece S, for the purpose of adjusting the distance between theupper and lower jaw. A spring, x, is firmly secured to the back of thesliding-piece S, which causes the claw C to keep its proper position.Now, by grasping a pipe, .a bolt, or their equivalent, within the jawsof the wrench,

and drawing the handle H in the proper direction, the teeth of the rackTwill engage the tooth or teeth o of the' sliding-piece S, and thefulcrum-pinspp are made to describe a circle, whose centre lies within apoint of the lower jaw c; this causes the upper jaw C to move towardsthe lower or corresponding jaw e. The motion of the wrench-handle Htightens the grasp, and renders the wrench most e'licient for itspurpose.

Claim.

What I claim as my invention, and desire to secure by Letters Patent, isThe sliding-piece S, with its tooth O, handle H,jaw C, and spring X, allconstructed and arranged to .operate substantially as described.

JAMES N. FREES'IONE.

Witnesses:

SAML MULLEPHER, JOHN Roenes.

